Pattern-chains for looms



(N Model.)

H. WYMAN.

PAT'I'ERN GHAIN FOR LOOMS.

No. 320,449. PatentegJunel, 1885. F H:

UNrTED STATES PATENT OFFICEO` HORAGE WYMAN, OF VVORESTER, MASSACHUSETTS.

PATTERN-CHAINS FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 320,449, datec'l June 16, 1885,

I Application filed November 20, 1882. (No model.)

'To a/ZZ whom it may concern:

Be it known that I, HORACE WYMAN, of Worcester, county of Worcester, State of Massachusetts, have invented an Im provement in Pattern-Chains for Looms, of which the following description, in connection with the aecompanying drawings, is a specification, like letters on the drawings representing likeparts.

This invention relates to pattern-Chains applicable to looms and other machinery employing pattern-chains, and has for its object to enlarge the capacity of the chain without enlargement of the notched hub which supports the said chain, as will be deseribed.

111 pattern-Chains, as heretofore made, w-hich rest upon and are carried by a notched hub, or a hub having a notched disk at each end, the rolls or risers carried by the rods held by the links have always been contained on those portions of the rods between the inner sides of the said disks, and the rods, from the inner faces of the disks outwardto the outer sides of the links of the chains, have never been made available to receive a series of risers.

To utilize the chain nearer each end than heretofore practiced, I have made segmental risers, which have hubs that fit over the rods and, in the movement of the chain, enter notches of the disks, and the said segmental risers are extended laterally over the chain- ]inks. I have also prolonged some of the rods sufficiently far outward beyond the outer sides of the chain-links to receive risers. In the old form of chain those portions of the rods engaged by the links and disks have never been available for rolls or risers. With this old form of chain the number of risers which could be employed was limited by the capacity of each rod between the notched disks of the hub, and a greater number of risers for each rod could not be used without lengthening the hub which carries the chain. In this my invention those portions of the rods of the pattern-chain engaged by the disks and the space occupied by the links are made available for the reception of risers, and the ends of the rods are prolonged beyond the outer sides of the links and adapted to receive risers, they appearing` outside of the links and the disks of the hub.

Figure 1 represents in end view a patternchain embodying,` my invention, and its hub; Fig' 2, a front view thereof; Fig. 3, a section on the (lotted line x x, Fig. 2; and Fig. 4, details of one of the segmental risers which project over the links of the chain.

The hub a, composed of a sleeve, af, and two end disks, (03 (03, the latter being' notched, as shown in the the drawings, to receive the rods Z) of the pattern-chain, and the shaft c, and the risers f, which last are made as rolls and placed on the rods b at the sides of sinkers 2, and located between the disks of the hub, are all as usual. The rods b enter and connect the links (Z e of the chain in any usual manner.

To utilize the heretofore waste space between the inner sides of the disks af* (v3 and the links of the chain, I have constructed certain segmental risers, g, which, shaped as shown in Figs. 3 and 4, and having` hubs g', are passed over the rods of the chain in the line of the disks, and enter the notches of the disks (see Fig. 3) as the hub is rotated to move the chain. The segmental risers q will preferably have lateral projections 4, to extend over and cover the links of the chain, as shown best in Fig. 2. By the employment of these segmental risers g two extra rows of risers may be added to a chain of otherwise common construction, and without changing the length of the hub. The ends of some of the rods, as at az, will be and are here shown as extended beyond the links of the chain far enough to receive upon them one or more risers or rolls, h, or sinkers m, as may be desired, whereas as Chains have before been made the rods have not been extended far enough beyond the outer sides of the links to receive and hold a roll or rolls, as shown in the drawings.

The rolls or risers f may be of any usual construction.

I claim- 1. The shaft o and hub a, composed of the notched disks (L3 (L3 and sleeve a', combined with the rods l), secured together in a chain by links d c, and provided with the usual risei s and sinkers and the supplemental'segmental risers g, engaging the notched disks, as set forth.

2. The shaft c and hub a, eomposed of the In testimony whereof I have sgned my name notehed disks as 003 and sleeve a', combined to this specifioation in the presence of two sub- With the rods b, seeured together in a ehain scribing Witnesses. by links d e and provided with the usual rsers T 5 and sinkers, and the supplemental segment-al HORAOE YMAN' risers g, engaging the notohed disks, and the Witnesses: endwise extensions az az of the rods b, provided J. B. SYME, with risers h and sinkers m, as set forth. J. A. WARE. 

